As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB PACK 1/2 VLV CLOSED. LEVEL AT 13,000 CAB ALT CONTINUED TO CLIMB AFTER RESETING PACK 1. RETURN TO DFW-C/A-FOUND LEAK AT THE AIR CONDITIONING EXHAUST SLEEVE. RESECURED CLAMPS REF. AMM 20-10-10. PERFORMED AIR CONDITIONING OPC IAW AMM EMB 140 AMM 21-00-00. OPC OK. NO LEAK NOTED.